Inventor

SHUMAKER MARK A

US3 patents

⚠️ This page may combine multiple inventors who share the name “SHUMAKER MARK A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

Oak Security Group LLC

2 patents

US11624208B2Apr 11, 2023

Door lock having a lighted display when in the locked position

Oak Security Group LLC5 citations66

US11946284B2Apr 2, 2024

Door lock capable of showing locking or unlocking state

Oak Security Group LLC0 citations37

BEST LOCK CORP

1 patent

US5116170AMay 26, 1992

Drill jig for preparing a door to receive a cylindrical lock

BEST LOCK CORP36 citations86